37
Input processing
Before PLC executing the program, read every input terminal’s ON/OFF status to the image
area.
When the program is running, even the input changed, the content in the input image area will
not change until the next scanning period coming.
Output processing
After running all the instructions, transfer the ON/OFF status of output Y image area to the
output lock memory area. This will be the actual output of the PLC.
The output contactors will delay the action according to the output soft components reponse.
2-5
.
Auxiliary Relay (M, HM, SM)
The auxiliary relays in XD/XL series PLC are all in decimal form, please see the following
table:
Series Name
Range
Normal
Power-off holding
Special
XD1
M
M0~M7999
HM0-HM959
SM0~SM2047
XD2
M0~M7999
HM0-HM959
SM0~SM2047
XD3
M0~M7999
HM0-HM959
SM0~SM2047
XD5
M0~M69999
HM0-HM11999
SM0~SM4999
XDM
M0~M69999
HM0-HM11999
SM0~SM4999
XDC
M0~M69999
HM0-HM11999
SM0~SM4999
XD5E
M0~M69999
HM0-HM11999
SM0~SM4999
XDME
M0~M69999
HM0-HM11999
SM0~SM4999
XDH
M0~M199999
HM0~HM19999
SM0~SM49999
XL1
M0~M7999
HM0-HM959
SM0~SM2047
XL3
M0~M7999
HM0-HM959
SM0~SM2047
XL5
M0~M69999
HM0-HM11999
SM0~SM4999
XL5E
M0~M69999
HM0-HM11999
SM0~SM4999
Execution Order
Number List
XD3 series
PLC
CPU unit
Program
process Area
Exte
rnal
Sign
al
I
npu
t
Input
Ter
m
ina
l X
Input
I
m
ag
e Area
O
ut
put
Im
age
A
rea
O
ut
put
T
er
m
inal
Y
Exte
rnal
Sign
al
O
u
tpu
t
Содержание XD Series
Страница 1: ...XD XL series PLC User manual Instruction WUXI XINJE ELECTRIC CO LTD Data No PD05 20201022 3 5 ...
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